Process and apparatus for increasing the efficiency of mash tubs for massecuite and the like



March 29, 19,32. A. ROLz 1,851,113

PARATUS FOR INCREASING THE EFFICIENCY PROCESS AND AP 'OF MASH TUBS FORMASSECUITE AND THE LIKE Filed Sept. 12. 1928 \/75 N N ENTU l, YA2055H522 a Patented Mar. 29, 1932 UNITED STATES PATENT OFFICE} ALOIS RfiLZ,0F AARBERG, SWITZERLAND rnocnss AND APPARATUS FOR INCREASING minEFFICIENCYOF MASH MAssEcUrrE nn mine LIKE rims FOB Application filedSeptember 12, 1928, Serial No. 305,600, and in Germany September 13,1927.

The efficiency of mash tubs for massecuite' and the like is in knownmanner increased if a liquid is mixed with the charge. This liq uid waspreviously simply applied to the sur-;

face of the contents in greater or less quantitles and at certalnintervals of time.

method, however, does not efi'ect a rapid and intimate mixture of theliquid with the charge, so that these known processes have considerabledrawbacks.

The object of the invention is to obviate these drawbacks by which theliquid is led to the mash tubs under" pressure in fine jets. The liquld1s, prefer-' Fig. 1 is a longitudinal section through mash tub accordingto the invention.

Fig. 2 is a front view of a modified con struction of the mash tub.

Fig. 3 is a longitudinal section through a further modified constructionof the mash tub.

A stirring shaft 3 provided with arms 1' disposed in the tub 2 is set'inrotation in known manner by a worm and worm wheel 4. According totheinvention, a tube 5 is placed in the mash tub or receptacle 2 and isprovided over its whole length with perforations for the passage of theliquid. A valve" 6 is arranged outside the tub in a tube 7 lead ing froma vessel containing liquid under. pressure and forming a prolongation ofthe tube 5. The valve can'as shown in Figs. 1' and 2 be provided with ahand wheel in or-" der to manually control the supply of the liquid. Thevalve 6 is, however, preferably controlled mechanically .so that theliquid is led intermittently to the tub 2 as shown in Fig. 2 as valve 6.

For this purpose a cam disc- 8 is secured externally to the mash tub 2on the arm of the stirring shaft 3, while at the front wall of the This"the arrangement in" 'ent places in the" tube.

' I projecting out of the tub 2 carries a small mash tub 2 or at anyother suitable fixed point a lever 10 is pivoted about a pin 9 the leverrests on the cam and is connected by'a rod 11 with the slide or valve 6.In this arrangement asthe shaft 3 and with it the cam rotates, the valve6 is opened and closed by the lever 10 and the rod 11 at each rotationof the shaft. Several cams can bearranged on the "disc, so that theliquid can be delivered several times during one revolution of theshaft3. i

The'cam'of the disc 8 may be adj ustable in .order to vary the stroke ofthe valve and in this way to control the quantity of liquidsupplied-at'any'time. a a

Obviously, instead of the single tube'5, several such tubes can beappliedat difl'er- Also, as shown in broken lines in F igs. l and 2, thetube 5 can be provided withbranch tubes 12 disposed between the arms 1of the stirrer in order to obtain a better distribution of the liquid.The syrup, water or other suitable liquid is preferably supplied under apressure such.

that the liquid penetrates as'deeply as possible into the charge. 7 i

As shown in Fig. 3 a beating shaft 13 is rotatably mounted above thetube 5 and carries short a'rmsll. One end of the shaft 13 gear wheel 15which engages with larger gear wheels 16 secured to the driven shaft 3.The tubes 12 branched from the tube 5 are arranged in this case parallelto the end walls of the tub 2, so that they are not in the way of thearms 14.

By usingthe device shown in Fig.3, the shaft 13, owing to the high gearratio of the wheels 16 and 15, is driven by the worm, gear 1 atconsiderably higher speed than the shaft 3," so that the liquid jetsstreaming from the perforations of the tube 5 are met and broken "up bythe arms 14, that is the liquid is thor- 'oughly' mixed "with the chargein the tub 2. Instead of driving the shaft 13 in the man'- the drive isessentially simplified, since this i ner shown, other suitabledrivingfmeans can shaft has a high velocity and reduction gear isunnecessary.

Having thus described the nature of my said invention and the best meansI know of carrying the same into practical effect, I

claim 1;- A sugar vmashing apparatus cornprisin a receptacle for themash, a perforated tube arranged in the receptacle, a pipe supplying aliquid under pressure-connectedvto said tube, a beating shaft arrangedabove said perforated: tube, short arms on-said beating shaft forbreaking up the liquidissu-ing from said tube, and means for controllingthe -sup-. ply of'said liquid.

. 2. A. sugar mashing apparatuscomprising a receptacle. for .the mash,aperforatedztube aarrangedin the receptacle, a pipe supplying aliquidunder pressure connected to said 'Qtube, a .beating.shaft arran-ged.above. said perforated tube,:shor.t arms onsaid beating shaft forbreaking upth'e liquid issuing from Said tube, and a valve forcontrolling thesupfply .of liquid under .pressure-..arranged on 25 ltheoutside of the receptacle.

3. A sugar mashing apparatus comprising a receptacle for themash, aperforated tube .-.arranged in the receptacle, a pipe supplyingal'liqu'id, under, pressureconnected to ,said 30 tube, a stirring shaft,abeatingshaft arranged. above said perforated tube, short arms .onsaid=beating shaft forzbreakingtupthe liquid issuing from saidtube,.1neans for controlling the supply, of said liquid, and toothedgears arrangedon' theoutsideof the receptacle .for driving both. shafts,thebeatingshaftbeing. .driven at a -higher 1 speed than the. stir-.ningi. shaft. .'..4=;.A.s.ugar. mashing. apparatus compris- 9. ingareceptacle forlthenmash, a; perforated tube arranged in" the receptacle,a pipe sup- ;plying a liquid. under'pressure.connected to .saidiube,aQstirringsha-ft, a beatingishaft arranged labove.salidperforated tube,.short 5, armson said beating shaft forbreakingup "f the. liquidissuingfrom said tube,:ai1d means for. .cont-rollingfthesupply of said. liquidWorm gearing arrangedon-the outside of the receptacle for driving bothshafts,v the beating shaft beingdriven at a higher speed than thestirring shaft.

5. A-.sugar mashing ,apparatus comprising a receptacle for' the mash,a.'stirring shaft in the receptacle, a perforated tube arranged ,in? thereceptacle, a pipesup'plying a liquid under pressure connected to saidtube, a valve for controlling the supply of. said tube, and a rotatablecam on thestirring shaftfor intermittently and automatically opening and{59 closing saidvalve.

' In testimony. whereof lhaveQaffixTed. my

signature. n

i ALOIS'FROLZ.

